CN101779187A - touchscreen using both carbon nanoparticles and metal nanoparticles - Google Patents
touchscreen using both carbon nanoparticles and metal nanoparticles Download PDFInfo
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- CN101779187A CN101779187A CN200880102975A CN200880102975A CN101779187A CN 101779187 A CN101779187 A CN 101779187A CN 200880102975 A CN200880102975 A CN 200880102975A CN 200880102975 A CN200880102975 A CN 200880102975A CN 101779187 A CN101779187 A CN 101779187A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/045—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249924—Noninterengaged fiber-containing paper-free web or sheet which is not of specified porosity
- Y10T428/24994—Fiber embedded in or on the surface of a polymeric matrix
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Abstract
A cover sheet assembly (10) is provided for a touchscreen system. The cover sheet assembly includes an insulating layer (12) having a surface (14) configured to be disposed over an electrically conductive area of a substrate of the touchscreen system, and an electrically conductive material (16) disposed on at least a portion of the surface of the insulating layer. The electrically conductive material includes a plurality of carbon nanoparticles (17) and a plurality of metal nanoparticles (19).
Description
Technical field
The present invention relates generally to the computing machine touch-screen, relates in particular to the conductive material that is used for touch-screen.
Background technology
Because in 1870s their introducing in early days, touch-screen provides the substitute of keyboard for specific computer utility.Under many situations, keyboard and mouse have been removed, because touch-screen provides the approach of access computer to the user.Resistor-type and capacitive touch screen typically comprise substrate, face glass for example, and it is positioned in for example surface of the display of LCD (LCD).Substrate is included in its lip-deep conductive material.Conductive material defines the conduction touch area on substrate surface, be used to accept the input of user to touch-screen.Insulation course is positioned at the top of conductive region, thinks that the user provides with touching to select the surface imported.
In the resistor-type touch-screen, insulation course forms the part of emulsion sheet, and this emulsion sheet comprises second conductive material that is positioned at towards the surface of the insulation course of substrate.By a plurality of insulating point that emulsion sheet and substrate is spaced apart, make two conductive materials are spaced apart.When the user touched emulsion sheet, two conductive materials were engaged with each other in the position that the user touches.In capacitive touch screen, directly with insulating layer deposition on the conductive material on the substrate.
Typically, be formed on conductive material on substrate and the insulation course by indium tin oxide (ITO).Because the transparency that ITO provides for the value of given conductance usually, this expects for some touch-screen applications, so use ITO usually.Yet ITO may be a bit easily crisp, makes conductive material may break repeated touches after, rupture and/or wears out, and this may cause touch-screen to lose function, lost efficacy and/or be different from desired working.In addition, because the supply of indium is restricted, so ITO may be relatively costly.In addition, may make ITO become to the ever-increasing demand of indium even expensive more along with dwindling of global provisioning.
In order to substitute ITO, proposed the metal nano fiber is used for appearing at the substrate of touch-screen and/or the conductive material on the emulsion sheet.Yet the metal nano fiber may be easy to suffer atmospheric corrosion.The atmospheric corrosion of the metal nano fiber in the conductive material may increase the contact resistance of conductive material, the magnitude of current that it can be reduced in the contact point place inflow between this conductive material and another conductive material and flow out conductive material.Proposed carbon nano-tube as substitute for the ITO in the conductive material on substrate that appears at touch-screen and/or the emulsion sheet.Yet carbon nano-tube may not be mated the transparency of ITO for specific conductance.
Compare with the conductive material that forms by ITO, have demand for the conductive material of permanance with increase.Also there is the demand of corrosion resistance that comprises the conductive material of metal nanoparticle for improvement.In addition, the needs that have the transparency of improving the conductive material that comprises carbon nano-particle.
Summary of the invention
In one embodiment, provide a kind of emulsion sheet assembly that is used for touch-screen system.Described emulsion sheet assembly comprises: insulation course, this insulation course have the surface of the conductive region top that is configured to the substrate that is arranged on described touch-screen system; And conductive material, this conductive material is set at least a portion on surface of described insulation course.Described conductive material comprises a plurality of carbon nano-particles and a plurality of metal nanoparticle.
In another embodiment, provide a kind of board unit that is used for touch-screen system.Described board unit comprises substrate and conductive material, and this conductive material is set at least a portion on surface of substrate, so that the conduction touch area to be provided on substrate.Conductive material comprises a plurality of carbon nano-particles and a plurality of metal nanoparticle.
In another embodiment, provide a kind of conductive material, this conductive material comprises a plurality of carbon nano-tube and a plurality of metal nano fiber.
Description of drawings
Fig. 1 is the skeleton view according to the touch-screen emulsion sheet assembly of embodiments of the invention formation.
Fig. 2 is the viewgraph of cross-section along the touch-screen emulsion sheet assembly that demonstrates in Fig. 1 of the intercepting of the line 2-2 among Fig. 1;
Fig. 3 is the cross sectional representation of the touch-screen emulsion sheet assembly that forms according to alternative embodiment according to the present invention;
Fig. 4 is the synoptic diagram of the carbon nano-particle in the touch-screen emulsion sheet assembly that demonstrates in Fig. 1 and Fig. 2.
Fig. 5 is the synoptic diagram of the metal nanoparticle in the touch-screen emulsion sheet assembly that demonstrates among Fig. 1 and Fig. 2.
Fig. 6 is the synoptic diagram of the touch-screen emulsion sheet assembly that demonstrates among Fig. 1 and Fig. 2.
Fig. 7 is the synoptic diagram according to the touch-screen emulsion sheet assembly of alternate embodiments formation of the present invention.
Fig. 8 is the top plan view according to the touch screen base plate assembly of embodiments of the invention formation.
Fig. 9 is the viewgraph of cross-section along the touch screen base plate assembly of the intercepting of the line 9-9 among Fig. 8.
Figure 10 is the viewgraph of cross-section according to the resistor-type touch-screen system of embodiments of the invention formation.
Embodiment
As using herein, if can be measured as two points that have between them less than the resistance of about 10 megaohms in existence on the material, so described material is considered to conduct electricity.In the situation of resistor-type touch-screen system, made differentiation for the resistance of the conductance of " sheet resistance " and " contact resistance " form.As using herein, " sheet resistance " of conductive material is defined as for the mobile resistance of the electric current in the plane of conductive material.As employed herein, " contact resistance " of conductive material is defined as the mobile resistance of electric current for the inflow conductive material at the contact point place between described conductive material and another conductive material and outflow conductive material.
Fig. 1 is the skeleton view according to the touch-screen emulsion sheet assembly 10 of embodiments of the invention formation.Fig. 2 is the viewgraph of cross-section of touch-screen emulsion sheet assembly 10.Assembly 10 can use with resistor-type touch-screen system (not demonstrating in Fig. 1 and 2).To be described the exemplary touch screen system that comprises assembly 10 in further detail hereinafter.Assembly 10 comprises insulation course 12, and this insulation course 12 has the surface 14 that is coated with conductive material 16 at least in part.As describing in further detail hereinafter, conductive material 16 comprises a plurality of carbon nano-particles 17 (Fig. 4 and 6) and a plurality of metal nanoparticle 19 (Fig. 5).Insulation course 12 can optionally be included in the coating 18 on the surface 20, and this surface 20 is relative with surface 14, to impel permanance that increases emulsion sheet assembly 10 on the whole and/or the permanance that increases surface 20 especially.Can be by any suitable made coating 18, such as but not limited to acryl resin and/or glass.
In use and as at length described hereinafter with respect to Figure 10, assembly 10 is remained on the top of the substrate (not demonstrating) of touch-screen system in Fig. 1 and 2, make surface 14 and the conductive material 16 on it roughly towards substrate.The surface 21 of coating 18 or alternately the surface when not comprising coating 18 20 touch-surface that exposes is provided, the user can touch this touch-surface to select by the shown input of touch-screen system.
Can be by can making insulation course 12 play as any suitable made insulation course 12 of described effect herein, such as but not limited to, polyester, polyethylene terephthalate (PET), PEN (PEN) and/or glass.The type of the touch-screen system that for example depends on the application-specific of assembly 10 and/or use with assembly 10, insulation course 12 can be transparent or partially transparents fully.In certain embodiments, one or more part of insulation course 12 can be opaque.Insulation course 12 can have any suitable size and/or shape, such as but not limited to rectangle, circle, triangle and/or ellipse, they can make insulation course 12 play the effect as describing herein, for example depend on the application-specific of assembly 10 and/or the type and/or the configuration of the touch-screen system that uses with assembly 10.
As described above, conductive material 16 comprises carbon nano-particle 17 and metal nanoparticle 19.In the exemplary embodiment of Fig. 2, conductive material 16 comprises two layers 25 and 27.As shown in Figure 2, layer 25 is set directly on the surface 14 of insulation course 12 and comprises metal nanoparticle 19, and layer 27 is set directly on the surface 29 of layer 25 and comprise carbon nano-particle 17.The layer 27 that comprises carbon nano-particle 17 impels the metal nanoparticle 19 that prevents layer 25 to be exposed to atmosphere and therefore to impel the metal nanoparticle 19 of protective seam 25 to avoid atmospheric corrosion.Therefore, layer 27 helps preventing the increase of the contact resistance of conductive material 16.In addition, compare with the conductive material that is formed by indium tin oxide (ITO), conductive material 16 can have the permanance of increase, and this is because the elasticity of metal nanoparticle 19 and/or the resistance to impact of carbon nano-particle 17.Though two layers 25 and 27 are shown, conductive material 16 can comprise any amount of layer, and each layer can comprise carbon nano-particle 17 or metal nanoparticle 19, as long as outmost exposed surface comprises carbon nano-particle 17.
In alternative embodiment, conductive material 16 comprises one or more layer, and wherein each layer has the potpourri of carbon nano-particle 17 and metal nanoparticle 19.As employed herein, term " potpourri " comprising: comprise the layer of one or more zone of dispersion, wherein each zone of dispersion only comprises carbon nano-particle or metal nanoparticle; Comprise and run through wherein mixed carbon nano-particle and the layer of metal nanoparticle (no matter whether potpourri is homogeneous); And/or their combination.Fig. 3 is the xsect according to the touch-screen emulsion sheet assembly 110 of alternate embodiments formation of the present invention.Assembly 110 comprises having the insulation course 112 that is coated with the surface 114 of conductive material 116 to small part.Conductive material 116 only comprises single layer 125.Single layer 125 comprises the potpourri of carbon nano-particle (not demonstrating) and metal nanoparticle (not demonstrating) in Fig. 3 in Fig. 3.Selectively, conductive material 116 can comprise the layer 125 more than, and it comprises the potpourri of carbon nano-particle and metal nanoparticle.In the exemplary embodiment of Fig. 3, each is orientated in layer 125 randomly in carbon nano-particle and the metal nanoparticle.Yet carbon nano-particle and/or metal nanoparticle can selectively be orientated in layer 125 nonrandomly, for example describe in further detail hereinafter about conductive material 16 (Fig. 1 and 2).In the exemplary embodiment of Fig. 3, the metal nanoparticle that is exposed at least in part on layer 125 the surface 129 of conductive material 116 may stand some atmospheric corrosions.Yet the carbon nano-particle in the layer 125 that is also exposed to the open air at least in part on surface 129 can provide electric conductivity at surperficial 129 places, and therefore impels the increase of the contact resistance that prevents conductive material 116.
The embodiment of Fig. 2 comprises conductive material 16, this conductive material 16 comprises at least two layers 25 and 27, wherein, each layer 25 or 27 comprises carbon nano-particle 17 or metal nanoparticle 19, and the embodiment of Fig. 3 comprises the conductive material 116 with one or more layer, and each layer comprises the potpourri of carbon nano-particle and metal nanoparticle.Yet, can selectively be the combination of the embodiment of Fig. 2 and 3 as the conductive material of describing herein and/or demonstrating.Particularly; except one or more layer that comprises carbon nano-particle or metal nanoparticle, can selectively comprise one or more layer of the potpourri with carbon nano-particle and metal nanoparticle as the conductive material of describing herein and/or demonstrating.
As shown in Fig. 1 and 2, metal nanoparticle 19 (Fig. 5) in carbon nano-particle 17 (Fig. 4 and 6) in the layer 27 and/or the layer 25 can selectively be arranged, and makes layer 25, layer 27 and/or whole conductive material 16 have the predetermined transparency with respect to the display (not demonstrating) that uses with assembly 10.As the embodiment of conductive material that describe and that demonstrate can be involved in the touch-screen system that uses with the display (not shown) of any kind herein, such as but not limited to, the display of any other type that plasma scope, cathode ray tube (CRT) display, organic light emitting diode display (OLED), LCD (LCD) and/or be suitable for used with touch-screen system.Some display emission polarized lights that use with touch-screen system.For example, more known LCD polarized light-emittings.More specifically, LCD typically comprises polarizing coating between backlight, backlight and the liquid crystal material and second polarizing coating on the opposite side of liquid crystal material.Each display pixel of LCD is as automatically controlled light valve, this be since liquid crystal to the effect of the orientation of the polarized light that arrives second polarizing coating.From second polarizing coating go out from light by polarization linearly.Depend on the orientation of the axis of polarization of second polarizing coating, the light of launching by LCD can by polarization flatly, vertically polarization, with 45 degree polarization, or with any other orientation polarization.The light that the electric field that horizontal polarization only is associated vibrates in the horizontal direction.The light that the electric field that vertical polarization only is associated vibrates in vertical direction.The light that on the direction of the angle at 45, vibrates with the electric field that only is associated of 45 degree polarization with respect to horizontal direction and vertical direction.
The main body of the main body of each carbon nano-particle 17 in layer 27 and each metal nanoparticle 19 in layer 25 provides the linear path in the conductive material 16, and electronics moves along this linear path.(as using herein, " electronics " is the abbreviation of " electric charge carrier in " hole " of electronics or semiconductor notion ").As shown in Figure 4, some or all in the carbon nano-particle 17 can selectively be elongated, make carbon nano-particle 17 each have roughly thickness T greater than them
1With their width W
1Length L
1For example, can to have be their thickness T to carbon nano-particle 17
1And/or their width W
13 times or the length L of bigger multiple
1Selectively, length L
1It can be thickness T
1And/or width W
110 times or more times.The elongated shape of carbon nano-particle 17 provides anisotropic conduction property for carbon nano-particle 17.Though be shown as xsect, make thickness T with circular
1And width W
1Be identical, but carbon nano-particle 17 each can comprise any suitable shape of cross section.Similarly, as shown in Figure 5, some or all in the metal nanoparticle 19 can selectively be elongated, make metal nanoparticle 19 each can have roughly thickness T greater than them
2With their width W
2Length L
2For example, can to have be their thickness T to metal nanoparticle 19
2And/or their width W
23 times or more times length L
2Selectively, length L
2It can be thickness T
2And/or width W
2Ten times or more times.The elongated shape of metal nanoparticle 19 provides anisotropic conduction property for metal nanoparticle 19.Have the circular xsect though be shown as, make thickness T
2And width W
2Be identical, but metal nanoparticle 19 each can comprise any suitable shape of cross section.In the exemplary embodiment, the thickness T of carbon nano-particle 17 and metal nanoparticle 19 and the size of width W are equal to or less than one micron, and the length L of carbon nano-particle 17 and metal nano fiber 19 is greater than one micron.Yet in certain embodiments, the thickness T of carbon nano-particle 17 and/or metal nano fiber 19 and/or the size of W can be greater than 1 microns.In addition, the length L of carbon nano-particle 17 and/or metal nano fiber 19 can be less than 1 micron.As employed herein, " nano particle " in " carbon nano-particle 17 " and " metal nanoparticle 19 " can represent to be less than or equal to 1 micron size and greater than 1 micron size.
As described above, metal nanoparticle 19 in carbon nano-particle 17 in the layer 27 and/or the layer 25 can selectively be orientated with respect to the polarisation of light by display emission, so that the predetermined transparency with respect to the polarized light that is gone out by display emission to be provided to layer 25, layer 27 and/or whole conductive material 16.In certain embodiments, what may expect layer 25, layer 27 and/or whole conductive material 16 is not that all parts all have predetermined transparency, makes that carbon nano-particle 17 and/or the metal nanoparticle 19 at such part place is not orientated for predetermined transparency is provided.Predetermined transparency can be to be partially transparent or fully transparent for the polarized light by display emission.For example, the length L of carbon nano-particle 17 and/or metal nanoparticle 19
1And L
2Can be arranged to pattern separately respectively, this pattern is by with respect to the direction D by the electric field of the light of display emission
1And be orientated, make layer 25, layer 27 and/or whole conductive material 16 for by the polarized light of display emission than perpendicular to polarisation of light direction D by display emission
1Direction on another polarized light of polarization more transparent.For example, the pattern of carbon nano-particle 17 and/or metal nanoparticle 19 can be along orientation D
AOrientation, this orientation D
AWith perpendicular to polarisation of light direction D by display emission
1The polarization direction of the other polarized light that does not show align more.In certain embodiments, the pattern of carbon nano-particle 17 and/or metal nanoparticle 19 be oriented to make layer 25, layer 27 and/or whole conductive material 16 for by the light ratio of display emission for perpendicular to the light of polarization more transparent at least 1% by the polarisation of light of display emission.In other embodiments, the pattern of carbon nano-particle 17 and/or metal nanoparticle 19 be oriented to make layer 25, layer 27 and/or whole conductive material 16 for by the light ratio of display emission for perpendicular to the light of polarization more transparent at least 2% by the polarisation of light of display emission.In another other embodiment, the pattern of carbon nano-particle 17 and/or metal nanoparticle 19 be oriented to make layer 25, layer 27 and/or whole conductive material 16 for by the light ratio of display emission perpendicular to the light of polarization more transparent at least 5% by the polarisation of light of display emission.
Fig. 6 is the synoptic diagram that demonstrates the emulsion sheet assembly 10 of a plurality of carbon nano-particles 17 that are arranged to a pattern, and this pattern is by with respect to the direction D by the electric field of the light of display emission
1Orientation provides predetermined transparency to give the light by display emission.For the sake of clarity, the size of carbon nano-particle 17 is by exaggerative, and the number of carbon nano-particle 17 is reduced, and makes the pattern density of carbon nano-particle 17 also be reduced.In the exemplary embodiment of Fig. 6, each orientation randomly in layer 25 of metal nanoparticle 19.Carbon nano-particle 17 is oriented the orientation D on institute edge
AWith perpendicular to polarisation of light direction D by display emission
1Direction D
2Roughly alignment.In other words, orientation D
ABe approximately perpendicular to polarisation of light direction D by display emission
1Alignment.In the exemplary embodiment of Fig. 6, by the polarisation of light direction D of display emission
1Be approximate vertical, and orientation D
AWith direction D
2Be approximately perpendicular to the surface 14 of insulation course 12 and extend.By the electric field of the polarized light of display emission with the thickness T of excited electrons along them
1(along direction D
1) in carbon nano-particle 17, move.The thickness T of carbon nano-particle 17
1Roughly less than their length L
1By the electronics of electric field excitation, if they are energized with the length L along carbon nano-particle 17
1Move, can not move enough far away.In Fig. 4, demonstrate the thickness T of exemplary electronics 23 along carbon nano-particle 17
1Move.Therefore, if with carbon nano-particle 17 the situation of random orientation compare, carbon nano-particle 17 will less interact with the polarized light by display emission, and therefore less scattering or absorb polarized light by display emission.In the exemplary embodiment of Fig. 6, the pattern of carbon nano-particle 17 is oriented the orientation D on institute edge
ABe approximately perpendicular to polarization direction D
1And D
3, therefore predetermined transparency is offered at direction D
1And D
3The light of last polarization.For the display of the unpolarized light of emission, the lateral wave attribute of light still will limit D
1And D
3The polarized component of direction, above-mentioned both direction are all perpendicular to direction D
A, and therefore identical transparency helps the display of the unpolarized light of emission that the embodiment by Fig. 6 provides.Though in the exemplary embodiment of Fig. 6, orientation D
ABe approximately perpendicular to polarization direction D
1And D
3Both direction still, is noticed about being transmitted in direction D
1The display of the light of last polarization is if the pattern of carbon nano-particle 17 is oriented the orientation D on institute edge
ARoughly with polarization direction D
3The alignment rather than with direction D
2Alignment (as shown in) with respect to the metal nanoparticle 519 that demonstrates among Fig. 7, can provide so for by display emission (by at direction D
1Last polarization) the predetermined transparency of light.Yet, about the display of emission nonpolarized light, if the pattern of carbon nano-particle 17 is oriented the orientation D on institute edge
ARoughly with polarization direction D
3Alignment is compared with the situation of the embodiment of Fig. 6 so, and carbon nano-particle 17 is for the polarization vector D of nonpolarized light
3Less opaque.In addition, if be oriented the orientation D on institute edge with the pattern of carbon nano-particle 17
ARoughly with the polarization direction D on the surface 14 that is parallel to insulation course 12
3The situation of alignment is compared, and the embodiment of Fig. 6 provides less contact resistance for the carbon nano-particle 17 of similar number.
The length L of some carbon nano-particles 17
1Can be not roughly along orientation D
AOrientation.Though the length L of all carbon nano-particles 17 in Fig. 6
1Be shown as roughly along orientation D
AOrientation, but in certain embodiments, the length L of some carbon nano-particles 17
1Not roughly along orientation D
AOrientation, but favour direction D
AOrientation.For example, as shown in Figure 7, the length of some in a plurality of metal nanoparticles 519 is not roughly along orientation D
AOrientation, but favour direction D
AOrientation.Yet the distribution of the orientation of metal nanoparticle 519 makes the pattern of metal nanoparticle 519 at orientation D
AOn have average orientation roughly on the whole.Particularly, length is roughly along direction D
AThe orientation metal nanoparticle 519 quantity and favour direction D
AThe angle of each metal nanoparticle 519, be enough to provide the predetermined transparency of conductive layer 525, this conductive layer 525 comprises for the metal nanoparticle 519 of the polarized light that is gone out by display emission and/or whole conductive material 516 (it comprises layer 525).In addition, in order to make metal nanoparticle 519 form conductive network in conductive material 516, metal nanoparticle 519 need be that electricity is interconnected.Therefore, metal nanoparticle 519 can depart from roughly straight along their length, metal nanoparticle 519 can overlap each other (as shown in Figure 7), and/or metal nanoparticle 519 can be to suspend at least in part and/or be included in the matrix material (such as but not limited to conducting polymer), and this matrix material has enough conductances interconnected metal nanoparticle 519 of sending a telegram here.Other example of embodiment, except the embodiment of Fig. 6, the length of each in wherein a plurality of metal nanoparticles can be roughly along orientation D
AOrientation includes but not limited to that template (hereinafter described) wherein is used for the embodiment of orientation that metal nanoparticle is arranged to expect.All of this paragraph describe also with carbon nano-particle 17 and as any other carbon nano-particle of describing herein relevant with metal nanoparticle and go for them.
Shown in Fig. 4 and 6, the thickness T of carbon nano-particle 17
1It is enough little to can be selected to the movement of electrons that the electric field that makes by the light (it can be maybe can not being polarized of being polarized) of display emission causes, so that the predetermined transparency of layer 27 and/or whole conductive material 16 to be provided for the light by display emission.The thickness T of the carbon nano-particle 17 of predetermined transparency is provided for light by display emission
1Any suitable value can be selected, such as but not limited to, in about molecule size with less than between by the hundreds of approximately nanometers in the scope of the light wavelength of display emission.Similarly, in other embodiments, wherein by the electric field excitation electronics of the light of display emission width W in carbon nano-particle 17 along them
1Move, can be as mentioned described in this paragraph with respect to thickness T
1Select the width W of carbon nano-particle 17
1
Though direction D by the electric field of the polarized light of display emission
1In Fig. 6, be shown as approximate vertical, but direction D
1Be not constrained to (the seeing) of approximate vertical as Fig. 6.On the contrary, by the light of display emission D in any direction
1Last polarization (and can be with orientation D
ABe chosen as with respect to the direction D that predetermined transparency is provided
1Any direction).For example, direction D
1Can alternately be approximate horizontal.Direction D
1It can also be other direction except approximate horizontal and direction approximate vertical.For example, Fig. 7 demonstrates wherein the polarisation of light direction D by display emission
1With with level and the vertical embodiment that becomes about 45 ° of extensions.As described above, the embodiment of Fig. 6 comprises a plurality of carbon nano-particles 17 is arranged to pattern, and this pattern is by with respect to the polarisation of light direction D by display emission
1Orientation provides predetermined transparency to give the light by display emission.Extraly or alternately, and summary ground as mentioned, can metal nanoparticle 19 be arranged to pattern to be similar to the mode of describing herein for carbon nano-tube 17, this pattern quilt is with respect to the polarisation of light direction D by display emission
1Orientation is to provide predetermined transparency for the light by display emission to layer 25 and/or whole conductive material 16.For example, in the exemplary embodiment of Fig. 7, the orientation D of the pattern of a plurality of metal nanoparticles 519 in the layer 525 of conductive material 516
ABe approximately perpendicular to polarization direction of light D by display emission
1In addition, the orientation D of the pattern of metal nanoparticle 519
AWith perpendicular to direction D
1The direction D of the light polarization that another of polarization do not show
3Roughly alignment.In the exemplary embodiment of Fig. 7, be included in a plurality of carbon nano-particle (not shown)s in the layer (not shown) of conductive material 516 each orientation randomly in the layer that carbon nano-particle was comprised in.
Removing to the polarized light by display emission provides outside the predetermined transparency, and the exemplary orientation of the pattern of the metal nanoparticle 519 that demonstrates in Fig. 7 can be impelled the light reflection around absorbing.Particularly, at direction D
3The part of the ambient light of last polarization moves the length of excited electrons along metal nanoparticle 519.Compare with the mobile phase along thickness or width, electronics will make metal nanoparticle 519 scatterings or be absorbed in direction D along bigger the moving of the length of metal nanoparticle 519
3The ambient light of last polarization.Correspondingly, conductive material 516 can impel a part that stops ambient light to pass conductive material 516 to advance.In like manner, for example can be with conductive material 516 as " neutral density filtrator ", it impels the contrast of increase display from the ambient light of the surface emitting of display by inhibition.Additionally or alternately, metal nanoparticle 519, any other metal nanoparticle of describing herein and/or any carbon nano-particle of describing herein can be similar to metal nanoparticle 519 orientations, so that the neutral density filtrator to be provided.In order to realize the advantage of such neutral density filtrator, can be preferably, nano particle mainly interacts via absorbing with light, rather than reflection or scattering.In certain embodiments, carbon nano-particle is compared with metal nanoparticle more absorption can be provided.
Fig. 8 is the top plan view according to the touch screen base plate assembly 210 of embodiments of the invention formation.Fig. 9 is the viewgraph of cross-section along the assembly 210 of the intercepting of the line 9-9 among Fig. 8.Assembly 210 can use with any suitable touch-screen system, for example resistor-type or capacitive touch screen system (not shown in Fig. 8 and Fig. 9).The exemplary touch-screen system that comprises assembly 210 will be described hereinafter in further detail.Assembly 210 comprises the substrate 212 with the surface 214 that is coated with conductive material 216 at least in part.The conductive material 216 of coated surfaces 214 is provided at the conduction touch area 218 on the surface 214.Assembly 210 comprises the network of the resistor that the pattern by the conductive electrode on conductive material 216 220 forms, and this electrode 220 is in abutting connection with the touch area 218.
In the exemplary embodiment of Fig. 8 and 9, conductive material 216 comprises two layers 225 and 227.Layer 225 is set directly on the surface 214 of substrate 212, and comprise a plurality of metal nanoparticles 219 (in the details A of Fig. 8, being shown), and layer 227 is set directly on layer 225 the surface 229 and comprise a plurality of carbon nano-particles 217 (demonstrating in the details B of Fig. 8).For the sake of clarity, the size of metal nanoparticle 219 and carbon nano-particle 217 is by exaggerative, and the quantity of metal nanoparticle 219 and carbon nano-particle 217 is reduced, and makes the pattern density of metal nanoparticle 219 and carbon nano-particle 217 also be lowered.In the exemplary embodiment of Fig. 8, each orientation in layer 225 and 227 separately randomly of metal nanoparticle 219 and carbon nano-particle 217.Alternately, metal nanoparticle 219 and/or carbon nano-particle 217 can be arranged to pattern, this pattern is by the direction orientation with respect to the electric field of the light of display (not demonstrating) emission of using with assembly 210, to provide layer 225, layer 227 and/or whole conductive material 216 for the predetermined transparency by the light of display emission.Though demonstrate two layers 225 and 227, conductive material 216 can comprise any amount of layer, and each layer can comprise carbon nano-particle 217 or metal nanoparticle 219.Additionally or alternative, for layer 225 and/or 227, conductive material 216 can selectively comprise one or more layers, and each layer has the potpourri of carbon nano-particle 217 and metal nanoparticle 219 in the described one or more layers.
Except the orientation pattern of carbon nano-particle 17, conductive material 216, carbon nano-particle 217 and metal nanoparticle 219 roughly are similar to conductive material 16 (Fig. 1,2 and 6), carbon nano-particle 17 (Fig. 4 and 6) and metal nanoparticle 19 (Fig. 5) respectively.Therefore, the description of conductive material 16, carbon nano-particle 17 and metal nanoparticle 19 and explanation can be applied to the carbon nano-particle and the metal nanoparticle 219 of conductive material 216, material 216 respectively.For example, the configuration of conductive material 216, material structure, structural thickness, electrical property, engineering properties, advantage, application process and/or device etc., and the advantage of the carbon nano-particle of material 216 and metal nanoparticle 219, configuration, layout, structure, material structure orientation, size, shape etc. roughly are similar to conductive material 16, carbon nano-particle 17 and metal nanoparticle 19 respectively.Therefore, the carbon nano-particle and the metal nanoparticle 219 of no longer more detailed herein description conductive material 216, material 216.Yet, can notice differently with conductive material 16, conductive material 216 is not crooked when being touched by the user, and therefore conductive material 216 in certain embodiments can be by more easily crisp structure manufacturing.
The anisotropic character of carbon nano-particle 217 and/or metal nanoparticle 219 may be to the operation generation effect of the touch-screen system that comprises assembly 210.For example, the anisotropic character of carbon nano-particle 217 and/or metal nanoparticle 219 may cause error or variation on the measurement of coordinates of touch area 218 when the user touches.Such error or variation may need for example by using the correction coefficient of determining between the alignment epoch of touch-screen system to proofread and correct.
In the exemplary embodiment, electrode 220 is set directly on the conductive material 216.Alternately, electrode 220 is set directly on the substrate surface 214 below the conductive material 216.The meaning of the pattern of electrode 220 only is exemplary, and therefore electrode 220 is not constrained to the pattern that shows among Fig. 8.On the contrary, electrode 220 can have any suitable pattern, and this pattern can make touch screen base plate assembly 210 play the function of describing as herein.Similarly, electrode 220 can have any suitable size, shape, resistance, conductance, and/or can be by any suitable made (such as but not limited to silver-colored frit and/or have the material of the conductive material 216 of more highdensity carbon nano-particle and/or metal nanoparticle), it can depend on the application-specific of assembly 210 for example and/or the type of the touch-screen system that uses with assembly 210.The type of the touch-screen system that for example depends on the application-specific of assembly 210 and/or use with assembly 210, electrode 220 can be fully transparent, partially transparent or opaque.In assembly 210, the specific region that can remove conductive material 216 to be to form strikethrough (not showing), and strikethrough is involved to combine with conductive electrode 220 in the design of known touch screen base plate sometimes.
Can be by making substrate 212 play any suitable made substrate 212, such as but not limited to glass, pottery and/or plastics as the function of describing herein.The type of the touch-screen system that for example depends on the application-specific of assembly 210 and/or use with assembly 210, substrate 212 can be transparent or partially transparents fully.Substrate 212 can have any suitable size and/or shape, such as but not limited to rectangle, circle, triangle and/or ellipse, it makes insulation course 212 can play the effect as describing herein, for example depends on the application-specific of assembly 210 and/or the type and/or the configuration of the touch-screen system that uses with assembly 210.
Figure 10 is the viewgraph of cross-section of resistor-type touch-screen system 300, and it can be included in touch screen base plate assembly embodiment and/or the emulsion sheet assembly embodiment that describes and/or demonstrate herein.In certain embodiments, resistor-type touch-screen 300 is 4 line formula systems.Alternately, system 300 can be 5 line formula systems.System 300 can be installed on any suitable display (not demonstrating), such as but not limited to the display that uses with touch-screen system of being suitable for of plasma scope, CRT monitor, OLED, LCD and/or any other type.In the exemplary embodiment, system 300 comprises emulsion sheet assembly 10 and board unit 210, and it is as discussed above comprises substrate 212, conductive material 216, conductive material 16 and insulation course 12.Alternately, system 300 comprises assembly 10 or assembly 210.In system 300 only comprised one this embodiment in assembly 10 or 210, the assembly that is not comprised can be comprised that the similar assembly (not shown) of known traditional conductive coating substitutes.
By a plurality of insulating point 302 that emulsion sheet assembly 10 and board unit 210 is spaced apart.Particularly, insulating point 302 is spaced apart with the conductive material 216 of board unit 210 with the conductive material on the insulation course 12 16.Typically be placed on the top (not demonstrating) on the surface of the display that uses with touch-screen with the surface 204 of surperficial 214 opposing substrates 212.In 5 line formula resistor-type touch screen operations, be electrically connected to the processor (not demonstrating) of touch area 218, the alternating voltage that strides across touch area 218 on X and Y direction is changed.In 4 line resistance type touch screen operations, on one in material 16 or 216 on the voltage gradient on the directions X and in material 16 and 216 another voltage gradient alternate on the Y direction.At the touch-surface of the insulation course 12 of user by touching the position in touch area 218 (21, or alternately the surface when not comprising coating 18 20) when importing, touch and make insulation course 12 move towards substrate 212.Insulation course 12 makes the conductive material 16 on the insulation course 12 engage with conductive material 216 at the board unit 210 of the position of moving or touching towards substrate 212 mobile, and so electrically contacts.Be connected to voltage that the circuit (not shown) of processor will be associated with touch or equipotential digitizing and send voltage or equipotential the processor of processor or computing machine or other device to, be used to handle user's input.The finger touch that shows among Figure 10 is electrically connected material 16 and 216, and by doing like this circuit from processor through electric interconnected (not shown) to material 16, through material 16, through the contact resistance the material 16 and 216, through material 216 be back to processor through electric interconnected (not shown) and realize closed.The clean resistance of the closed circuit of describing in this paragraph is meant " closed circuit resistance ".
Can be as the metal nanoparticle described herein by any suitable metal manufacturing, such as but not limited to silver, bismuth, gold, nickel, tin, copper, zinc and/or any other conducting metal.Though the metal nanoparticle of Miao Shuing is shown as the metal nano fiber herein, the metal nanoparticle of Miao Shuing can comprise any suitable shape, character, structure etc. herein, so that metal nanoparticle can play the effect of describing as herein, such as but not limited to metal nano fiber, metal nano ball, metal nano-tube and/or metal nanometer line.Though carbon nano-particle described herein is shown as carbon nano-tube, but carbon nano-particle described herein can comprise any suitable shape, character, structure etc., it can make carbon nano-particle play the effect of describing as herein, such as but not limited to carbon nano-tube, carbon nano-fiber, Nano carbon balls and/or carbon nanocoils.For carbon nano-tube, carbon nano-tube can comprise Single Walled Carbon Nanotube and/or multi-walled carbon nano-tubes.In addition, carbon nano-tube can be pure, functionalization and/or be filled with other material, such as but not limited to metal, is encapsulated in " nano wire " in the carbon nanotube cavity with formation.As employed herein, term " carbon nano-tube " is meant the nanotube that comprises carbon, for example has the fullerene of cylindrical configuration.
As every layer of the conductive material described herein, the any layer in alternative embodiment that comprises the potpourri of carbon nano-particle and metal nanoparticle, it can use and can make described layer play as any suitable method, structure, process and/or the device of the effect described herein to make.Each of conductive material layer can comprise can make described layer play any suitable structure and/or the parts as the effect of describing herein.The example of structure that comprises carbon nano-particle and/or metal nanoparticle can be the layer that is suitable for constructing conductive material, it includes but not limited to comprise the film and/or the fabric of at least a portion in a plurality of carbon nano-particles and/or the metal nanoparticle, no matter whether carbon nano-particle and/or metal nanoparticle are arranged or the orientation that is arranged to expect as describing herein randomly.Each of conductive material layer can be constructed by the fabric and/or the film of carbon nano-particle and/or metal nanoparticle, it is the individual layer of carbon nano-particle and/or metal nanoparticle, or can be selectively by a plurality of layers of structure of carbon nano-particle and/or metal nanoparticle.The carbon nano-particle of the described layer of conductive material and/or metal nanoparticle can selectively suspend and/or be included in and can make conductive material play in the matrix as one or more other the material that is fit to of the effect described herein, such as but not limited to polymkeric substance.The example that is used for the polymkeric substance that is fit to of matrix includes but not limited to, polymethylmethacrylate (PMMA), acrylate, polyacrylonitrile, polyvinyl alcohol (PVA), polyester, polycarbonate, polyurethane, Polyvinylchloride and/or may be dissolved in any other polymkeric substance in the solvent.The example of the solvent that is fit to includes but not limited to toluene, dimethylbenzene, methyl ethyl ketone (MEK) and/or analog.In certain embodiments, conductive material comprises the discrete layer of carbon nano-particle and metal nanoparticle, described carbon nano-particle can be functionalized bonding with between the adjacent discrete layer that impels carbon nano-particle and metal nanoparticle, such as but not limited to, be transplanted to hydroxy-acid group on the carbon nano-particle, use the disulfide group group be transplanted on the carbon nano-particle, use the thienyl group of being transplanted on the carbon nano-particle and/or use the planar conjugate hydrocarbon, by use such as but not limited to pyrene (pyrene).
Each layer as the conductive material described herein, be included in any layer of the potpourri that comprises carbon nano-particle and metal nanoparticle among the alternative embodiment, under applicable situation, can direct growth or deposition (for example corresponding surface of another layer of surface of insulating layer 14 or conductive material) from the teeth outwards.Alternately, one or more layer of conductive material can be made and deposit on the surface in advance.Each of conductive material layer can be used and can make conductive material play as any suitable method, process, structure and/or the device of the effect described herein to be applied on the surface, such as but not limited to, spin coating, dipping, spraying (such as but not limited to using gasoloid), serigraphy operation and/or direct growth are on surface (such as but not limited to growth and/or the auxiliary chemical vapor deposition (CVD) of gas phase catalyst based on the spin coating catalyzer).In some depositing operations,, can carbon nano-particle and/or metal nanoparticle be suspended and/or be included in the suitable solvent with solubilized or insoluble form such as but not limited to spin coating, spraying, dipping and/or silk-screen printing technique.Be used to control parameter that the material on surface or corresponding laminar surface of such exemplary types applies and comprise surface-functionalized, the spin coating parameter (such as but not limited to the revolution (RPM) of length, suspension concentration, spin coating solution concentration and/or per minute) of lower surface, number of times, temperature, pH value, time, density of catalyst/concentration and/or the growing environment (such as but not limited to growth time, growth temperature and/or gas concentration) that applies.Carbon nano-particle can selectively be functionalized (such as but not limited to use be transplanted to carbon nano-particle hydroxy-acid group, use the disulfide group group be transplanted on the carbon nano-particle, use the thienyl group of being transplanted on the carbon nano-particle and/or use the planar conjugate hydrocarbon, such as but not limited to pyrene) with auxiliary interior bonding between the carbon nano-particle and/or the interior bonding between carbon nano-particle and the metal nanoparticle of improving.The directional growth of carbon nano-particle and/or chemical self assembly can be used to grow or deposit and have the suitably single nanotube of orientation, length and the similarity of control.For example, during some that describe were herein used, carbon nano-particle can show the characteristic of " self assembly ", on wherein single nanotube is easy to be bonded to when energy drives the surface that they were applied to.The type of the touch-screen system that for example depends on the specific application of assembly and/or use with assembly, independently carbon nano-particle can be bonded to one another owing to Van der Waals force.
Carbon nano-particle and/or metal nanoparticle can be by the orientation pattern of using any suitable method, technology, structure and/or device to be arranged to expect, such as but not limited to, use fluid flow arrangement, serigraphy, electric field action, comprise be dimensioned with shape with the template of the groove that holds carbon nano-particle and/or metal nanoparticle at least in part and/or the trend of arranging certainly.Another example comprises the carbon nano-particle of initial formation random alignment and/or the network of metal nanoparticle, and remove and/or destroy carbon nano-particle and/or metal nanoparticle afterwards, such as but not limited to infrared and/or radio frequency (RF) heating of using polarization with orientation of not expecting.Also an example comprises that formation (such as but not limited to growth and/or deposition) becomes carbon nano-particle and/or metal nanoparticle in the orientation pattern of expectation, and by at least a portion carbon nano-particle and/or metal nanoparticle being suspended and/or being included in the position that fixes in carbon nano-particle and/or the metal nanoparticle each in the matrix, matrix is such as but not limited to above-described polymeric matrix.
Herein the conductive material of Miao Shuing each the layer, be included in any layer of the potpourri that comprises carbon nano-particle and metal nanoparticle among the alternative embodiment, can have any suitable thickness, it can make described layer and/or whole conductive material 16 play as effect described herein.Whole conductive material 16 can selectively have the thickness of homogeneous, so that consistent electrical property to be provided, such as but not limited to resistance.Comprise that any layer thickness of carbon nano-particle can be in certain embodiments limited by the length (for example thickness of layer 27) of carbon nano-particle.In other embodiments, any layer the thickness that comprises carbon nano-particle can be limited by width, thickness and/or the diameter of carbon nano-particle when described layer only comprises one deck carbon nano-particle, or can be limited by the multiple of width, thickness and/or the diameter of carbon nano-particle when described layer comprises carbon nano-particle more than one deck.The material of whole conductive material and/or thickness for example can be selected so that any suitable contact and/or sheet resistance to be provided, it can make conductive material play as effect described herein and/or make conductive material that the closed circuit resistance of expectation can be provided, such as but not limited to, sheet resistance less than about 2000 ohm-sq, less than about 2000 ohm contact resistance, and/or less than about 3000 ohm closed circuit resistance.Selected thin layer, closed circuit and/or contact resistance can for example depend on the specific application of assembly and/or the type of the touch-screen system that uses with assembly.In certain embodiments; in order to minimize the optical absorption of carbon nano-particle; may expect that any layer that makes whole conductive material and/or comprise carbon nano-particle is thin as far as possible, also impel simultaneously and protect and seal whole material and/or described layer of influence that avoids corrosive elements.
Substitute as carbon nano-particle, conductive material described herein can comprise conducting polymer, and no matter whether conducting polymer is in the layer with sodium metal rice particle separation or no matter whether conductive material comprises the layer of the potpourri with metal nanoparticle and conducting polymer.In an embodiment, conductive material comprises conducting polymer, the electronics linear path along the strand of the atom of its conducting polymer that moves, and is provided at the functionalization of carbon nano-particle described herein.The example of the conducting polymer that is fit to includes but not limited to thiophene derivant polymkeric substance and/or polythiofuran derivative polymkeric substance.
Example
As described above, can make by using any suitable method, structure, technology and/or device as each layer of the conductive material described herein and demonstrate, it can make described layer play as the effect of description herein.An example making layer 25 and 27 (Fig. 2) includes but not limited to:
(1) (FePc) by means of the temperature pyrolysis ferric phosphate (II) between about 800 and 1100 ℃ in the gaseous environment of argon gas/hydrogen, by 17 growths of the carbon nano-particle in the pattern that makes the carbon nano-particle 17 that Fig. 6 demonstrates layer 27 is created on the quartz base plate (referring to Yang, Y.; Huang, S.; He, H.; Mau, A.W.H.; Dai, L.J.Am.Chem.Soc.1999,121,10832; And Dai, L.; Patil, A.; Gong, X.; Guo, Z.; Liu, L.; Liu, T.; Zhu, D.Chem.Phys.Chem.2003,4,1150 and the list of references wherein quoted);
(2) by using polyacrylic acid carboxyl to be transplanted on the wall of carbon nano-particle 17 carbon nano-particle 17 is carried out functionalization;
(3) by making carbon nano-particle 17 and 0.25mM AgNO
3React with the 0.25mM trisodium citrate, add the 10mM NaBH of 0.6mL afterwards
4And stirred 30 seconds, and generated the Seed Layer of carbon nano-fiber;
(4) on layer 27, generate layer 25 by following steps:
(a) the 10mM AgNO of preparation 2.5mL
3, the 100mM ascorbic acid of 5.0mL and 93mL the solution of 80mM bromination hexadecane trimethyl ammonium (CTAB);
(b) add the metal nano fiber Seed Layer of 2.5mL in described solution;
(c) add the 1M NaOH of 0.5mL in described solution;
(d) mix described solution;
(e) with the described solution of the centrifugal 10mL of 6000rpm 30 minutes;
(f) remove supernatant; With
(g) sediment that will comprise silver-colored nanofiber is dissolved in the deionized water of 0.5ml once more;
(referring to Jana, N.; Gearheart, L.; Murphy, C.; Chem.Commun., 2001,617-618);
(5) concentration of the PMMA by will be in toluene is that the solution of 2wt% is drawn downwards by layer 25 and in layer 27, till the carbon nano-particle 17 of making an appointment with half length is coated, the layer 25 and 27 of bonding is suspended in the matrix, carry out air drying afterwards and bake a whole night, to generate conductive material 16 at 80 ℃;
(6) peel off conductive material 16 from quartz base plate; With
(7) conductive material is applied on the surface of insulating layer 14, makes layer 25 be sandwiched between surface of insulating layer 14 and the layer 27, and make the end of uncoated of carbon nano-tube 17 be exposed and outwards outstanding from the PMMA matrix.
Notice, can control the coating degree of depth of specific polymkeric substance (PMMA in this example), but be not limited to the plasma modification of the bulk density of volume, nanotube of concentration, the polymer solution of attribute, polymkeric substance by adjusting solvent and/or nanotube surface and Be Controlled with respect to carbon nano-particle 17.
That describe and/or that demonstrate herein embodiment provides the touch-screen with conductive material, compares with the conductive material that is formed by ITO, and it can have the permanance of increase.That describe and/or that demonstrate herein embodiment can provide the conductive material of the metal nano fiber that comprises the corrosion resistivity with improvement.That describe and/or that demonstrate herein embodiment can provide the conductive material of the carbon nano-tube that comprises the transparency with improvement.
Though that describe herein and/or demonstrate and/or provide about resistor-type touch-screen system conductive material embodiment that describe and/or that demonstrate herein, but the embodiment of conductive material that describe and/or that demonstrate is not limited to use with touch-screen system herein, but can use with the touch-screen system of any other type, such as but not limited to the capacitive touch screen system.Though the conductive material embodiment that describes and/or demonstrate is described and/or is demonstrated about touch-screen system herein, but the conductive material embodiment that describes and/or demonstrate is not limited to use with touch-screen system, but can use, and/or be used to comprise any application of the conductive material of partially transparent at least with any suitable system.
Describe and/or illustrate exemplary embodiment herein in detail.The specific embodiment that embodiment is not limited to describe herein, on the contrary, the parts of each embodiment and/or step can be used in other parts described herein and/or step independently and separately.Each parts among embodiment and/or each step can also be used in combination with other other parts and/or the step of embodiment.Be introduced in described herein and/or during the elements/components that illustrates etc., " one ", " described " and " at least one " are to represent to exist one or more elements/components etc.Term " comprises ", " comprising " and " having " be to represent the meaning that comprises, and be possible have other elements/components except listed elements/components etc. etc.In addition, term in the claims " first ", " second " and " the 3rd " etc. are only with making a check mark, and can not apply digital requirement to their object.In addition, the restriction of following claim is not formulated as the form that device adds function, and can not make an explanation for the 6th section based on 35U.S.C. § 112, unless and up to the restriction of such claim clearly use the wording of following by the statement in the functional cavity of other structure " be used for ... device ".
Though invention has been described aspect various certain embodiments,, those skilled in the art will recognize that to make amendment in the spirit and scope of claim implements the present invention.
Claims (10)
1. emulsion sheet assembly that is used for touch-screen system, described emulsion sheet assembly comprises:
Insulation course, described insulation course have the surface of the conductive region top that is configured to the substrate that is arranged on described touch-screen system; With
Conductive material, described conductive material are set at least a portion on described surface of described insulation course, and described conductive material comprises a plurality of carbon nano-particles and a plurality of metal nanoparticle.
2. emulsion sheet assembly according to claim 1, wherein, described conductive material comprises the ground floor and the second layer, described ground floor is set directly on the described surface of described insulation course, the described second layer is set directly on the surface of described ground floor, described ground floor comprises described a plurality of metal nanoparticle, and the described second layer comprises described a plurality of carbon nano-particle.
3. emulsion sheet assembly according to claim 1, wherein, described conductive material comprises the single layer of the potpourri with described a plurality of carbon nano-particle and described a plurality of metal nanoparticles.
4. emulsion sheet assembly according to claim 1, wherein, at least a in described a plurality of carbon nano-particle and the described a plurality of metal nanoparticle is arranged to a pattern, described pattern is by the direction orientation with respect to light polarization, makes at least a portion of described conductive material have the predetermined transparency with respect to described light polarization.
5. emulsion sheet assembly according to claim 1, wherein, at least a in described a plurality of carbon nano-particle and the described a plurality of metal nanoparticle is arranged to a pattern, described pattern is oriented along an orientation, described orientation is alignd better than described orientation with the polarization direction of light polarization with first direction, described first direction is approximately perpendicular to the polarization direction of described light polarization, preferably, wherein, at least a described pattern in described a plurality of carbon nano-particle and the described a plurality of metal nanoparticle is along the orientation of roughly aliging with described first direction.
6. emulsion sheet assembly according to claim 5, wherein, described first direction is approximately perpendicular to the described surface of described insulation course.
7. emulsion sheet assembly according to claim 1, wherein, described metal nanoparticle comprises at least a in silver, bismuth, gold, nickel, tin, copper and the zinc nanoparticles.
8. emulsion sheet assembly according to claim 1, wherein, at least a portion of described a plurality of metal nanoparticles and described a plurality of carbon nano-particles is aggregated the thing matrix at least in part and comprises.
9. emulsion sheet assembly according to claim 1, wherein, described a plurality of carbon nano-particle comprises that at least a in carbon nano-tube, Nano carbon balls, carbon nano-fiber and the carbon nanocoils, described a plurality of metal nanoparticles comprise at least a in metal nano fiber, metal nano ball, metal nano-tube and the metal nanometer line.
10. conductive material, described conductive material comprises a plurality of carbon nano-particles and a plurality of metal nanoparticle, preferably wherein, when described conductive material was used as the emulsion sheet of resistor-type touch-screen system, described conductive material had less than about 2000 ohm contact resistance with less than the sheet resistance of about 2000 ohm-sq.
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| US11/891,980 US8199118B2 (en) | 2007-08-14 | 2007-08-14 | Touchscreen using both carbon nanoparticles and metal nanoparticles |
| PCT/US2008/009717 WO2009023242A1 (en) | 2007-08-14 | 2008-08-13 | Touchscreen using both carbon nanoparticles and metal nanoparticles |
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| CN101779187B CN101779187B (en) | 2012-12-26 |
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| US (1) | US8199118B2 (en) |
| EP (1) | EP2191355A1 (en) |
| JP (1) | JP2010537274A (en) |
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- 2008-08-13 WO PCT/US2008/009717 patent/WO2009023242A1/en active Application Filing
- 2008-08-13 CN CN2008801029758A patent/CN101779187B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103365504A (en) * | 2012-04-09 | 2013-10-23 | 台达电子工业股份有限公司 | Capacitive touch device and method for manufacturing same |
| CN111819427A (en) * | 2017-01-14 | 2020-10-23 | 奈米制作实验室 | Sensor and touch screen with environmental compensation function, in particular for temperature |
| CN111754857A (en) * | 2019-03-27 | 2020-10-09 | 韩国科学技术研究院 | Double-sided display device using nano plasma and method of manufacturing the same |
| CN111754857B (en) * | 2019-03-27 | 2022-02-01 | 韩国科学技术研究院 | Double-sided display device using nano plasma and method of manufacturing the same |
| CN110109569A (en) * | 2019-05-07 | 2019-08-09 | 业成科技（成都）有限公司 | Touch-control structure and preparation method thereof and touch device |
| CN110109569B (en) * | 2019-05-07 | 2022-04-15 | 业成科技（成都）有限公司 | Touch structure, preparation method thereof and touch device |
| CN114746239A (en) * | 2019-11-22 | 2022-07-12 | 微软技术许可有限责任公司 | System and method for manufacturing electronic device housings |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2010537274A (en) | 2010-12-02 |
| CN101779187B (en) | 2012-12-26 |
| EP2191355A1 (en) | 2010-06-02 |
| TW200912721A (en) | 2009-03-16 |
| WO2009023242A1 (en) | 2009-02-19 |
| US8199118B2 (en) | 2012-06-12 |
| US20090046073A1 (en) | 2009-02-19 |
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